Pilates exerciser



FIG. 1 is a perspective view showing the new design for a pilates exerciser machine;

FIG. 2 is a front view thereof;

FIG. 3 is rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof; and,

FIG. 6 is a top view thereof.

Broken lines illustrate portions of the abdomen exerciser outside the scope of the claimed design. 

CLAIM The ornamental design for a pilates exerciser, as shown and described. 